Smartphone gloves: all fingers are covered except for an index finger (and perhaps a thumb) which are left open like on the fingerless gloves that market traders and the like wear so that you can operate your capacitive sensing-based screen without taking your gloves off.

Walking up the steps in the Apple Store t’other day. Person in front of me was dressed, to a first approximation, identically—Doc Martens, pinstripe trousers, long-sleeved black T-shirt, with a stubbly beard and slightly grown out hair, carrying a messenger bag.